The use of the Ridge Road between the Yuba County boundary and the town of Alleghany, designated as primary Road #3 in the County Road System, by any commercial vehicle exceeding a maximum gross weight of seven tons is prohibited; provided, however, that the limitation established herein shall not be effective with respect to the exempt vehicles established by Cal. Veh. Code § 35720, nor with respect to any service vehicle of any public utility subject to Public Utilities Commission jurisdiction. Any areas or portions of the Ridge Road upon which federal aid secondary (FAS) construction has been completed and accepted are specifically excluded from the provisions of this section. (Ord. 268, eff. 12/4/63; Ord. 245, eff. 7/19/61; Ord. 225, eff. 1/15/58; Ord. 208, eff. 12/1/55; Prior code § 31205)